The Pierburg Porsche Secondary Air Injection Control Valve - 700018510 is a component designed for use in Porsche vehicles to control the secondary air injection system. This system helps to reduce emissions by injecting fresh air into the exhaust system to help burn off any remaining fuel. The control valve is responsible for regulating the flow of air into the system, ensuring that it is functioning properly and efficiently. It is a high-quality, durable valve made by Pierburg, a trusted brand in the automotive industry. This product is specifically designed for use in Porsche vehicles and is a crucial component in maintaining the vehicle's emissions control system.